diff options
Diffstat (limited to 'w32/compat/dirent.c')
| -rw-r--r-- | w32/compat/dirent.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/w32/compat/dirent.c b/w32/compat/dirent.c new file mode 100644 index 0000000..8d66e47 --- /dev/null +++ b/w32/compat/dirent.c @@ -0,0 +1,207 @@ +/* Directory entry code for Window platforms. +Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, +2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. +This file is part of GNU Make. + +GNU Make is free software; you can redistribute it and/or modify it under the +terms of the GNU General Public License as published by the Free Software +Foundation; either version 3 of the License, or (at your option) any later +version. + +GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR +A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program. If not, see <http://www.gnu.org/licenses/>. */ + + +#include <config.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <string.h> +#include <stdlib.h> +#include "dirent.h" + + +DIR* +opendir(const char* pDirName) +{ + struct stat sb; + DIR* pDir; + char* pEndDirName; + int nBufferLen; + + /* sanity checks */ + if (!pDirName) { + errno = EINVAL; + return NULL; + } + if (stat(pDirName, &sb) != 0) { + errno = ENOENT; + return NULL; + } + if ((sb.st_mode & S_IFMT) != S_IFDIR) { + errno = ENOTDIR; + return NULL; + } + + /* allocate a DIR structure to return */ + pDir = (DIR *) malloc(sizeof (DIR)); + + if (!pDir) + return NULL; + + /* input directory name length */ + nBufferLen = strlen(pDirName); + + /* copy input directory name to DIR buffer */ + strcpy(pDir->dir_pDirectoryName, pDirName); + + /* point to end of the copied directory name */ + pEndDirName = &pDir->dir_pDirectoryName[nBufferLen - 1]; + + /* if directory name did not end in '/' or '\', add '/' */ + if ((*pEndDirName != '/') && (*pEndDirName != '\\')) { + pEndDirName++; + *pEndDirName = '/'; + } + + /* now append the wildcard character to the buffer */ + pEndDirName++; + *pEndDirName = '*'; + pEndDirName++; + *pEndDirName = '\0'; + + /* other values defaulted */ + pDir->dir_nNumFiles = 0; + pDir->dir_hDirHandle = INVALID_HANDLE_VALUE; + pDir->dir_ulCookie = __DIRENT_COOKIE; + + return pDir; +} + +void +closedir(DIR *pDir) +{ + /* got a valid pointer? */ + if (!pDir) { + errno = EINVAL; + return; + } + + /* sanity check that this is a DIR pointer */ + if (pDir->dir_ulCookie != __DIRENT_COOKIE) { + errno = EINVAL; + return; + } + + /* close the WINDOWS32 directory handle */ + if (pDir->dir_hDirHandle != INVALID_HANDLE_VALUE) + FindClose(pDir->dir_hDirHandle); + + free(pDir); + + return; +} + +struct dirent * +readdir(DIR* pDir) +{ + WIN32_FIND_DATA wfdFindData; + + if (!pDir) { + errno = EINVAL; + return NULL; + } + + /* sanity check that this is a DIR pointer */ + if (pDir->dir_ulCookie != __DIRENT_COOKIE) { + errno = EINVAL; + return NULL; + } + + if (pDir->dir_nNumFiles == 0) { + pDir->dir_hDirHandle = FindFirstFile(pDir->dir_pDirectoryName, &wfdFindData); + if (pDir->dir_hDirHandle == INVALID_HANDLE_VALUE) + return NULL; + } else if (!FindNextFile(pDir->dir_hDirHandle, &wfdFindData)) + return NULL; + + /* bump count for next call to readdir() or telldir() */ + pDir->dir_nNumFiles++; + + /* fill in struct dirent values */ + pDir->dir_sdReturn.d_ino = (ino_t)-1; + strcpy(pDir->dir_sdReturn.d_name, wfdFindData.cFileName); + + return &pDir->dir_sdReturn; +} + +void +rewinddir(DIR* pDir) +{ + if (!pDir) { + errno = EINVAL; + return; + } + + /* sanity check that this is a DIR pointer */ + if (pDir->dir_ulCookie != __DIRENT_COOKIE) { + errno = EINVAL; + return; + } + + /* close the WINDOWS32 directory handle */ + if (pDir->dir_hDirHandle != INVALID_HANDLE_VALUE) + if (!FindClose(pDir->dir_hDirHandle)) + errno = EBADF; + + /* reset members which control readdir() */ + pDir->dir_hDirHandle = INVALID_HANDLE_VALUE; + pDir->dir_nNumFiles = 0; + + return; +} + +int +telldir(DIR* pDir) +{ + if (!pDir) { + errno = EINVAL; + return -1; + } + + /* sanity check that this is a DIR pointer */ + if (pDir->dir_ulCookie != __DIRENT_COOKIE) { + errno = EINVAL; + return -1; + } + + /* return number of times readdir() called */ + return pDir->dir_nNumFiles; +} + +void +seekdir(DIR* pDir, long nPosition) +{ + if (!pDir) + return; + + /* sanity check that this is a DIR pointer */ + if (pDir->dir_ulCookie != __DIRENT_COOKIE) + return; + + /* go back to beginning of directory */ + rewinddir(pDir); + + /* loop until we have found position we care about */ + for (--nPosition; nPosition && readdir(pDir); nPosition--); + + /* flag invalid nPosition value */ + if (nPosition) + errno = EINVAL; + + return; +} |